Tipos de filme de FULANO(A)

## ANTES DE USAR
# Para criar data/movies.csv
import_data("tom_cruise")

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filmes = read_imported_data()

Descrição

filmes %>% 
    ggplot(aes(x = ano, y = bilheteria)) + 
    geom_point(size = 4, color = paleta[1]) 

filmes %>% 
    ggplot(aes(x = bilheteria)) + 
    geom_histogram(binwidth = 15, fill = paleta[2], color = "black") + 
    geom_rug(size = .5) 

filmes %>% 
    ggplot(aes(x = avaliacao)) + 
    geom_histogram(binwidth = 10, boundary = 0, fill = paleta[3], color = "black") + 
    geom_rug(size = .5) 

Estrutura de grupos?

p = filmes %>% 
    ggplot(aes(x = "", y = bilheteria, label = filme)) + 
    geom_jitter(width = .05, alpha = .3, size = 3) + 
    labs(x = "")

ggplotly(p)

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Agrupamento hierárquico

agrupamento_h = filmes %>% 
    mutate(nome = paste0(filme, " (av=", avaliacao, ")")) %>% 
    as.data.frame() %>% 
    column_to_rownames("filme") %>% 
    select(avaliacao) %>%
    dist(method = "euclidian") %>% 
    hclust(method = "ward.D")

ggdendrogram(agrupamento_h, rotate = T, size = 2, theme_dendro = F) + 
    labs(y = "Dissimilaridade", x = "", title = "Dendrograma")

get_grupos <- function(agrupamento, num_grupos){
    agrupamento %>% 
        cutree(num_grupos) %>% 
        as.data.frame() %>% 
        mutate(label = rownames(.)) %>% 
        gather(key =  "k", value = "grupo", -label) %>% 
        mutate(grupo = as.character(grupo))
}

atribuicoes = get_grupos(agrupamento_h, num_grupos = 1:6)

atribuicoes = atribuicoes %>% 
    left_join(filmes, by = c("label" = "filme"))

atribuicoes %>% 
    ggplot(aes(x = "Filmes", y = avaliacao, colour = grupo)) + 
    geom_jitter(width = .02, height = 0, size = 1.6, alpha = .6) + 
    facet_wrap(~ paste(k, " grupos")) + 
    scale_color_brewer(palette = "Dark2")

k_escolhido = 3

atribuicoes %>% 
    filter(k == k_escolhido) %>% 
    ggplot(aes(x = reorder(label, avaliacao), y = avaliacao, colour = grupo)) + 
    geom_jitter(width = .02, height = 0, size = 3, alpha = .6) + 
    facet_wrap(~ paste(k, " grupos")) + 
    scale_color_brewer(palette = "Dark2") + 
    labs(x = "", y = "Avaliação RT") + 
    coord_flip()